The Jewish Internet Defense Force, a group that claims to have 5,000 members worldwide, says it is steadily removing members from a viciously anti-Israel and anti-Semitic group on Facebook, having taken control of the group on Sunday.

"Facebook wouldn't do anything about [the group], so we did what had to be done," the group posted on its Web site. "We're not sure how long this can or will last, so we're moving fast to do what needs to be done."

The Jewish Internet Defense Force (JIDF) describes itself as a group of Jewish activists who fight anti-Semitism and terrorism trends throughout the Internet.